Jteck



ATTORNEY.

S. SHARPNECK. STEAM POWER STAMP.

Patented Apr. 15, 1884.

cams PETERS co., wAsHINmN, D. c.

(No Model.)

WITNESSBS.

- UNITED STATES 'PATENT Ormes.

WILLIAM s. sHAnrNnoK, or DENVER, coLonnDo, Assis-Non To THE Nichons MANUFACTURING COMPANY, or sAMnfrLAoE;

s1" 51AM-POWER STAM P;

SPECIFICATION forming part efLetters Patent No. 296,789, dated April l5. 18M. .Application inea December e. ieee. (No man.)

To all whom it 1n/ty concern.

Be it known that I,- WiLLmu SJ-Snanr- NECK, a citizen of the United States offAmerica, residing at Denver-,in the county of Arapahoe and State of Colorado, have invented certain new and useful Improvements in Steam-Power Stamps, of which the following is a specification, reference being had therein Vto the accompanying drawings,

The object of this invention .1s to make a steam-powerstamp that will use the same steam'ou both sides ofthe piston, thus working on the same principle as the compound engine; and the. invention consists inthe construction, arrangement, and combination of Spirits, hereinafter more' fullyv described and claimed.

In the accompanying drawings, Figure 1 f shows a vertical cross-section of a power-stamp constructed according to my invention with the piston in elevation; Fig. 2, a similar view,

wholly in section, with the piston in another position.

Arepresents the cyiinder, provided with an inlet-port, B, and exhaust-port C. The inlettport opens directly into the' lower end of the description se'tiu. grooves in the piston, and. L are also packing-rings set in grooves in the' cylinder.

lll lli represent ports formed in the piston, beginning about one-third of the lengt-h of the cylinder above the. bottom thereof and terminating at the top, so as toppen into the cylinder. Thesepassages may be straight; but l.

' prefer to make them as shown, with their up-.

per ends curved around or set diagonally, as shown' in the drawings, for a purpose hereinafter explained.

The operation of the stamp is as follows: ,y

Steam being f admitted at B, passesup' the steam-ports D and enters the annular steamport E. At .the same time the pressnre'underneath the piston H raises the same until the steam-ports M M in the pistonI-I communicate with the annular steam-port E, when steam rushes in through said steam-ports M, formediri piston-head I'I, tothe top end ofthe cylinder, and the great difference in the areaof the top and bottom end of the piston H allows the steam that is admitted at the top end ofthe cylinder K to force the piston H andits rod I down below the exhaust-port C until it is arrested by the rock or other subst-ance which maybebelow the head (not shown) attached to the lower end of the piston-rod; Y

When it is desired that the piston shall have vertical moti-ons only, the steam-passages M tmay be perpendicular; but when the engine is to be used forstamping ore or for roekdrilling, it is advisable that the piston shall turn between each stroke, land for this purpose give thel upper ends oithe passage a turn partly round the upper part of the piston, so that as the steam strikes the inclined part of the passage it will cause the piston to turn on its axis, and thus the'position of the stamp' or drill will be changed at'each stroke.

It will thus be seen that by the arrangement of the piston, cylinder, and ports the steam is made to turn the piston, and that steam can be out oit-at two or three inches of the stroke, and that the expansion of the steam and the weight of the piston and rod carries said piston and rod down below the annular exhaustport until the stampen the bottom ofthe pis-l ton-rod hits the rock or other material, ,after which, as the steaml above the piston is exhausted through exhaust-port C, the piston is again raised by the steam under it.

l do not limit myself to the exact const-ruotion shown, as it is evident that a single side passage, D, in the cylinder and a single passage, M, through the piston will be sufficient.

lt is also evident that 'the inlet-port B might open directly into the port E, if preferred.

What I claim as new isl. The combination, in a steam-stamp, oi a piston, having an enlarged rod to give' heads of different areas, with a cylinder, A der and piston provided with ports arranged,

IOC

both cylinsubst-.ml ially its described, to allow thesteam v to in'st raise the piston, and at the same time give, it a partial rotary movement, and then expand above the same and drive it downward, :1S Set i'ollh.

The combination, in a steam-stamp',-of a piston provided with apassage, M, commencn ing at the side and terminating at the top of a cylinder provided with lthe inlet-port E, opening substantially in the center of the cylinder, and' exhaust-port C, substantially as described.

The combinatingwitii .a Cylinder, A,.

having inlet and exhaust ports, of the piston H, provided with the passages M, communicating alternately with Said inlet andv exhaust ports, said passages being inclinednear their upper end, substantiallyvas and for the purpose described.

4. The combination, with tile cylinder A, 9ov

having the annular inlet-port E, passages 1) and main inlet B, 'of the piston H, having heads of different. `areas, and provided with the passages M,- inclined at their upper ends, all'constructed and arranged substantially as described. A

5. The combination, with the cylinder A, of the piston H, provided with inclined steampassages, through which thc steam'passes on its Way to the large' end ofthe cylinder,- sub- 3o stantially as and for the purposespeciiied.

In testimony whereof I affix my signature, in presence of. two witnesses, this 24th day of November, 1883. i 'WILLIAM Si SHAB-PREGR.

H. A. KENNEDY, W. J. Swrr'r. 

